Index Catalog // ScholarsArchive@OSU

Late Cenozoic Climate, Ice-sheet and Earth-surface Evolution Derived from Terrestrial and Marine Sedimentary Archives

Creator:: Bill, Nicholas S.
Abstract:: The goals of this dissertation are centered on understanding changes in Earth surface and climate systems through the use of geologic proxies as records of past changes in these systems. Specifically, this dissertation (1) establishes a new chronology for retreat of the Ross Sea sector of the West Antarctic Ice...
Resource Type:: Dissertation
Full Text:: Ross Sea sector of the West Antarctic Ice during the last deglaciation, (2) investigates the changes

New Treatments for HIV and Cancer: Uncovering Bioactive Compounds from Small Molecule Sources

Creator:: Overacker, Ross D.
Abstract:: Small molecule drugs have been instrumental in our fight against diseases, beginning when some of the earliest ancient cultures used plant remedies to treat illnesses. More recently, the skill of isolating and characterizing the active ingredients within bioactive plants and microbial extracts has led to the isolation and design of...
Resource Type:: Dissertation
Full Text:: Chapter One: General Introduction Ross D. Overacker 2 1.1 History of

Paleoclimatic influence on sedimentation and manganese nodule growth during the past 400,000 years at MANOP Site H (eastern equatorial Pacific)

Creator:: Finney, Bruce Preston
Resource Type:: Dissertation
Full Text:: sincere thanks go to my major professor, Ross Heath, for always finding time in his busy schedule to

Basic and applied studies on Douglas-fir beetle : spatial relationships of infestations, lipids and host habitat, and attraction distances of pheromone-baited traps

Creator:: Dodds, Kevin J.
Abstract:: Three studies on Douglas-fir beetle (DFB), Dendroctonuspseudotsuae, were conducted to investigate its basic and applied biology. Studies included investigations into the spatial relationship of DFB infestations over multiple years and multiple landscapes, relationships between DFB brood adult lipid levels and position of development along the length of tree boles, and...
Resource Type:: Dissertation

Geometry of Locomotion

Creator:: Ramasamy, Suresh
Abstract:: Many animals and robots move through the world by coupling cyclical changes in shape called gaits to an interaction with the environment. Because mobility is an important aspect of such robots, a key metric when evaluating design and performance of mobile robots is the efficiency of their optimal gaits. The...
Resource Type:: Dissertation
Full Text:: : Geometry of Locomotion Abstract approved: Ross L. Hatton There are four major contributions described in

Abundance and community composition of arboreal spiders : the relative importance of habitat structure, prey availability and competition

Creator:: Halaj, Juraj
Abstract:: This work examined the importance of structural complexity of habitat, availability of prey, and competition with ants as factors influencing the abundance and community composition of arboreal spiders in western Oregon. In 1993, I compared the spider communities of several host-tree species which have different branch structure. I also assessed...
Resource Type:: Dissertation
Full Text:: Structure. Prey Availability and Competition. Abstract approved: John D. Lattin, Darrell W. Ross _ This

Sediments and tectonics of the Gorda-Juan de Fuca plate

Creator:: Phipps, James B.
Abstract:: Cores taken from the ridge areas of the Gorda-Juan de Fuca plate have a sedimentation rate that is appropriate for the study of late Quaternary stratigraphy. An analysis of the clay and silt mineralogy of the cores using X-ray diffraction methods and by noting changes in the foraminiferan-radiolarian abundances in...
Resource Type:: Dissertation
Full Text:: many people. Drs. Vern Kuim and Ross Heath were my major professors and I especially owe them a debt

Orb Web Vibrations: Modeling, Localization, and Measurement

Creator:: Otto, Andrew W.
Abstract:: The orb web is a multipurpose structure---serving as a home for its inhabitant spider, as a prey capture device, and as a physical extension of the spider’s sensing abilities. Biologists are particularly interested in the spider’s ability to locate prey trapped in its web by sensing the vibrations induced from...
Resource Type:: Dissertation
Full Text:: : Orb Web Vibrations: Modeling, Localization, and Measurement Abstract approved: Ross L. Hatton The

Tree Physiological, Physical, and Chemical Characteristics Related to Spruce Beetle Colonization: Engelmann versus Blue Spruce

Creator:: Ott, Daniel S.
Abstract:: Blue spruce (Picea pungens) and Engelmann spruce (Picea engelmannii) experience varying levels of spruce beetle (Dendroctonus rufipennis (Kirby)) colonization, yet the underlying differences and mechanisms resulting in lower colonization for blue spruce are not known. Both spruce species have important roles in subalpine ecosystems where examining changes in mortality, distribution,...
Resource Type:: Dissertation
Full Text:: :_____________________________________________________ Darrell W. Ross Blue spruce (Picea pungens) and Engelmann spruce (Picea engelmannii

Geometric Motion Planning for Inertial Systems

Creator:: Faraji, Hossein
Abstract:: In order to enable better visualization and understanding of the effect of the robot's geometry and inertia on the robot's trajectories, this dissertation proposes to use geometric mechanics to bridge the gap between the physical motion of a robot and its mathematical structure. The main focus of this research is...
Resource Type:: Dissertation
Full Text:: . Title: Geometric Motion Planning for Inertial Systems Abstract approved: Ross L. Hatton The

ScholarsArchive@OSU

Late Cenozoic Climate, Ice-sheet and Earth-surface Evolution Derived from Terrestrial and Marine Sedimentary Archives

New Treatments for HIV and Cancer: Uncovering Bioactive Compounds from Small Molecule Sources

Paleoclimatic influence on sedimentation and manganese nodule growth during the past 400,000 years at MANOP Site H (eastern equatorial Pacific)

Basic and applied studies on Douglas-fir beetle : spatial relationships of infestations, lipids and host habitat, and attraction distances of pheromone-baited traps

Geometry of Locomotion

Abundance and community composition of arboreal spiders : the relative importance of habitat structure, prey availability and competition

Sediments and tectonics of the Gorda-Juan de Fuca plate

Orb Web Vibrations: Modeling, Localization, and Measurement

Tree Physiological, Physical, and Chemical Characteristics Related to Spruce Beetle Colonization: Engelmann versus Blue Spruce

Geometric Motion Planning for Inertial Systems

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